![]() ![]() For example: When I/O config assigns LU numbers they default to the COM port number. ![]() When one configures the ports, it may be necessary to change some of the Logical Unit numbers. This will allow one to use COM ports 1 and 2 (built into the PC) in the normal manner, and then add COM ports 3 through N with the PC plug-in card. These libraries may be downloaded from:īefore configuring the ports it may be advisable to disable the integrated COM ports 3 and 4 in the BIOS configuration setup. Install the I/O libraries and configure the ports. Some of these cards have their own on-board processors that enable them to share one IRQ and use less system resources. In selecting a multi-port RS-232 card make sure that its performance meets your requirements. If these are recognized by Windows and configured in the I/O libraries, VEE can communicate with them as it would communicate with any other COM port. This makes it difficult to add multiple adapter cards.Ī number of vendors sell PC plug-in cards that support multiple RS-232 ports. COM ports 1 and 3 share IRQ 4 COM ports 2 and 4 share IRQ 3.Most PCs fully support two RS-232 ports but have limited capability on the third and fourth ports. This means that multiple devices require multiple ports. The RS-232 protocol does not normally support multiple devices on one port. VEE can communicate through PC plug-in cards that have multiple RS-232 ports. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |